331321332 has 12 divisors (see below), whose sum is σ = 773083136. Its totient is φ = 110440440.

The previous prime is 331321307. The next prime is 331321357. The reversal of 331321332 is 233123133.

It is an interprime number because it is at equal distance from previous prime (331321307) and next prime (331321357).

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 331321299 and 331321308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13805044 + ... + 13805067.

Almost surely, 2^331321332 is an apocalyptic number.

It is an amenable number.

331321332 is an abundant number, since it is smaller than the sum of its proper divisors (441761804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331321332 is a wasteful number, since it uses less digits than its factorization.

331321332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27610118 (or 27610116 counting only the distinct ones).

The product of its digits is 972, while the sum is 21.

The square root of 331321332 is about 18202.2342584640. The cubic root of 331321332 is about 691.9634142619.

Adding to 331321332 its reverse (233123133), we get a palindrome (564444465).

The spelling of 331321332 in words is "three hundred thirty-one million, three hundred twenty-one thousand, three hundred thirty-two".